Boiler



Oct- 31, l933- H. DIETERLEN 1,933,419

BOILER Filed Jan. 21. 1951 Figi Fi fdl L? f H Il fnuerzfor Healyleef/Zev,

Patented Oct. 31, 19.33

UNrrED .STATES PATENT OFFICE Application Januar The present inventionBOILER Henry Dieterlen, Paris, France and in France y 21, 1931, SerialNo. 510,300,

January 21, 1930` 4 claims. (c1. 122-367) relates toy heat exchangerssuch as boilers or economizers, having sets or groups of tubes providedwith fins, and has for one of its main objects to provide improved meanswhereby a better exhaustion may be obtained along materially simplifyingdevices.

the

According to the present the length of the tubes thus construction ofsuch a heat exchanger having tubes arranged between headers at each endprovided fins the depth of which alters the other.

The fins may increase from one end to the other.

tubes may be parallel, or

with longitudinal from o ne end to uniformly in depth The axes of thethey may be inclined at an angle to one another so that the adjacentedges of the ns are more or less parallel.

The invention is represented diagrammatically in the accompanyingdrawing, in

which Figure 1 shows adjacent elements of` a group of boiler tubesprovided with fins according to the invention;

Figure 2 is a modification of the arrangement in elevation and partgroupof tubes conthe invention and adapted s a boiler economizer. 'l providedwith the are mounted in par- Figure 2 the tubes "l with respect to oneanother so that the adjacentl edges of the fins 'l are relativelyparallel.

In Figure 3 the groups type mentioned is shown.

the tubes 7 anda header header 10 at the top of l1 at the lower of tubes'7 having ns 8.

part of these tubes of boiler tubes of the This group has a for each setThe headers 10 and 11 are disposed outside of the direct current of gas,the flue 9 as indicated by 8 terminate at a certain distance tofacilitate header in order the gases around the ends which passesthrough the arrows. The fins kfrom each the circulation of of the tubesadjacent to the headers, and about the whole nest of tubes.`

As represented in may be provided,

Figure 3, soot blowers 14 and also sight holes 15. The

soot blowers are preferably arranged with their axes parallel to the sothat the flanges or longitudinal fins of the tubes fins 8 thereof serveas guides for the cleaning fluid while the latter is projected aboutsaid tubes by Vsaid soot blowers.

From the foregoing,

it will be understood that the tubes being arranged between headerswithin a flue and the fins terminating at such distance of said headers,the

mtted freely throughout the whole nest of tubes.

gaseous current is adinvention, I provide valong the length Ihe tubesmay be arranged in rows, adjacent tubes in each row being parallel.

By increasing the depth of the anges'or fins 8 in the direction of thegas flow along the tubes, a uniform absorption of heat is obtained alongthe length of the tubes.

Having now particularly described and ascertained the nature of myinvention and in what mannervthe same is to vbe performed, I declarethat what I claim is:

1. A heat exchanger comprising a plurality of headers, a nest of tubesarranged between and connected to said headers, means causing heatinggases to flow generally longitudinally of said tubesflanges on saidtubes and extending longitudinally thereof, the depth of said flangesbeing increased in the direction of gas flow along the tubes, whereby agood absorption of heat may be'obtained along the length rof the tubes.

2. A heat exchanger comprising a plurality of headers, a `nest of tubesarrangedbetween and connected to said headers, means causing heatinggases to flow generally longitudinally of said tubes, flanges on saidtubes and extending longitudinally thereof,vthe ldepth of said flangesbeing increased uniformly in the direction of gas ilow alongl the tubeswhereby a uniform absorption of heat may be obtained along the length ofthe tubes.

3. A heat exchanger comprising a plurality of headers, a nest of tubesarranged between and connected to said headers with their axes parallel,means causing heating gases to flow generally longitudinally of saidtubes, flanges on said tubes and extending longitudinally thereof, thedepth of said flanges being increased uniformly in the direction of gasflow along the tubes whereby a uniform absorption of heat may beobtained of the tubes.

4. A boiler comprising a plurality of headers, a nest of tubes arrangedbetween and connected to said headers, means causing heating gases toflow generally longitudinally of said tubes, flanges on said tubes andextending longitudinally ythereof, the depth of said flanges beingincreased in the direction of gas flow along the tubes, fluid sootcleaning means adapted to project the cleaning fluid in planessubstantially parallel to the axis of said tubes and said flangesserving as guides for the cleaning fluid while the latter is projectedabout said tubes.

, HENRY DIETERLEN.

